without S&T you have to either use the Atom Array or put a Proximal shader in the Alpha of a material applied to the landscape - then drop the landscape into the proximal's 'Objects' slot with only Use Edges selected then trim the End Distance down to just a few % play with the Function to get the look you need. Step is pretty sharp but you usually have to go for AntiAliasing Best for that to render smoothly.

There have been Wireshaders available (for free sometimes) over the years but I can't find any right now.

The Sketch and Toon works by setting the Render Settings/Sketch and Toon settings so that all the Line settings are unchecked and the Shading settings have Background and Object set to Off then a Sketch Style tag is put on the landscape with the Lines all unchecked except for Edges. This can be see through if you put a full alpha texture on the landscape too.

The Atom Array generates structure so it will be a little slower to render and it's not just lines there is thickness

The Proximal can be see through like in the example (Because it's in the Alpha channel) or it can be coloured lines on the object like the S&T example by using it in the Color channel. This will probably render the slowest if you have a lot of wires, it also has to have an editable object so the Proximal has real edges to work with